The temporal dynamics of visual search: Evidence for parallel processing in feature and conjunction searches
The temporal dynamics of visual search: Evidence for parallel processing in feature and conjunction searches
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DOI：
10.1037/0096-1523.25.6.1517
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发表时间：
1999-12-01
影响因子：
2.1
通讯作者：
Carrasco, M
中科院分区：
文献类型：
--
作者：
McElree, B;Carrasco, M
特征搜索和合取搜索被认为是描述视觉处理中的并行和串行操作。作者通过检查特征和连接的检测的时间动态来评估这一说法。第一个实验使用的反应时间（RT）任务复制标准的平均RT模式，并检查RT分布的形状。第二个实验使用响应-信号速度-准确度权衡（SAT）程序来测量辨别力（渐近检测准确度）和检测速度（处理动态）。集大小影响歧视的功能和合取搜索，但只影响检测速度在后者。拟合模型的SAT数据，其中包括一个串行组件overpredicted所观察到的动态差异的大小。作者得出结论，特征和连接词都是并行检测的。注意力在视觉处理中的作用的影响进行了讨论。
Feature and conjunction searches have been argued to delineate parallel and serial operations in visual processing. The authors evaluated this claim by examining the temporal dynamics of the detection of features and conjunctions. The Ist experiment used a reaction time (RT) task to replicate standard mean RT patterns and to examine the shapes of the RT distributions. The 2nd experiment used the response-signal speed-accuracy trade-off (SAT) procedure to measure discrimination (asymptotic detection accuracy) and detection speed (processing dynamics). Set size affected discrimination in both feature and conjunction searches but affected detection speed only in the latter. Fits of models to the SAT data that included a serial component overpredicted the magnitude of the observed dynamics differences. The authors concluded that both features and conjunctions are detected in parallel. Implications for the role of attention in visual processing are discussed.